George Chauncey, Professor of History and director of the Columbia Research Initiative on the Global History of Sexualities, works on the history of gender, sexuality, and the city, with a particular focus on American LGBTQ history. He is the author of Gay New York: Gender, Urban Culture, and the Making of the Gay Male World, 1890-1940, which won five book awards, including the Merle Curti Award in social history (OAH), the Frederick Jackson Turner Prize (OAH), and the Los Angeles Times Book Prize for History, and Why Marriage? The History Shaping Today’s Debate over Gay Equality. He is also the co-editor of Hidden From History: Reclaiming the Gay and Lesbian Past and of a special issue of GLQ: Journal of Lesbian and Gay Studies on “Thinking Sexuality Transnationally.” Since 1993, he has participated as an expert witness in more than thirty gay rights cases, including Romer v. Evans (1996), Lawrence v. Texas (2003), and the marriage equality cases decided by the Supreme Court in 2013 and 2015. He has also served as historical consultant to numerous public history projects, including exhibitions and lecture series at the New York Public Library and Chicago History Museum and several documentary films. Before coming to Columbia in fall 2017, he taught at the University of Chicago and at Yale University, where he was awarded Yale’s prize for teaching excellence in the humanities and served as director of both undergraduate and graduate studies for the American Studies program as well as chair of the History Department and chair of the Committee for LGBT Studies. He is currently completing a book on race, urbanism, and gay male culture and politics in postwar New York City.